Browsing Faculty of Science & Technology (FST) by Title
Now showing items 4054-4073 of 4283
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Trend of carbon dioxide emissions from fossil hels and cement production in Kenya
(Department of Metereology, 2000) -
Trend of rainfall in East Africa
(Department of Meteorology, University of Nairobi. Nairobi. Kenya, 1981)Trends of rainfall in East Africa during the period 1922-1975 are examined using two independent approaches. namely the graphical and statistical methods. Under the graphical method the original and smoothed rainfall series ... -
Trends and Periodicities in East African Rainfall Data
(University of Nairobi, 1976-03)Annual rainfall values from 35 stations in parts of East Africa (Kenya, northern Tanzania, and south-eastern Uganda) are analyzed for trend, periodicities, and variability. The data cover time periods ranging from 44 to ... -
Trends of intraseasonal descriptors of wet and dry spells over equatorial eastern Africa
(University of Nairobi, 2017)Many African countries whose economies are largely based on weather/climate sensitive sectors are vulnerable to long‐term changes in weather and climate. This study is aimed at assessing whether the recent decades have ... -
Trends of the intra-seasonal statistics of daily rainfall over East Africa.
(Department of Meteorology, 2008) -
Triblock copolymers of lactide with poly(ethylene glycol) and influence of stereochemical composition
(2003)Polymerization of L-lactide (LLA) and poly(ethylene glycol) (PEG) at 120°C using stannous 2-ethyl hexanoate results in ABA triblock copolymers in good yields. The glass transition temperature of the copolymers shows strong ... -
Trichodermadiene: a new trichothecene
(Department of Chemistry, 1980)A new trichothecene, trichodermadiene possessing a dienic ester side chain has been isolated and characterized. -
Tris(2-pyridyl)phosphine oxide: how C-H.O and C-H.N interactions can affect crystal packing efficiency.
(Department of Chemistry, 2004-04)Tris(2-pyridyl)phosphine oxide, (I), C(15)H(12)N(3)OP, is isomorphous with tris(2-pyridyl)phosphine. Because of a combination of C-H.O and C-H.N interactions, the crystal packing is denser in the title compound than in the ... -
Triterpene saponins of Maesa lanceolata leaves
(Department of Chemistry, 2011)Chemical investigation of Maesa lanceolata leaves aqueous MeOH extract has led to the isolation of eight new triterpene glycosides identified as 16-oxo-28-hydroxyolean-12-ene 3- O - β -glucopyranosyl-(1'' → 6') ... -
Triterpenoids and Steroids of Myrsine africana Leaves
(College of Physical and Biological Sciences, 2006) -
Tropane alkaloids from Erythroxylum emarginatum
(College of Physical and Biological Sciences, 2007)A tropane alkaloid, anhydroecgonine methyl ester N-oxide (2), was isolated for the first time as a naturally occurring compound, with anhydroecgonine methyl ester (1) from the bark of Erythroxylum emarginatum. Compound 1 ... -
Trophic Ecology of Sardinella gibbosa (Pisces: Clupeidae) and Atherinomorous lacunosus (Pisces: Atherinidae) in Mtwapa Creek and Wasini Channel, Kenya
(Western Indian Ocean Marine Science Association, 2002)The food habits of two schooling planktivorous fishes, Sardinella gibbosa and Atherinomorous lacunosus, were investigated in Mtwapa creek and Wasini Channel of the Kenya coast. Spatial and temporal variations in their food ... -
Trophic Ecology of Some Common Juvenile Fish Species in Mtwapa Creek, Kenya
(AJOL, 2004)The trophic status of common fish species in Mtwapa creek on the Kenyan coast was studied. Both the qualitative and quantitative spectra of the diets of these fish species were investigated. It was found that the eight ... -
Tropical freshwater ecotones: their formation, functions and use
(Khuwer Academic Publishers.Fisheries Resources Research Institute,, 2001)Tropical water-terrestrial ecotones play important roles in regulating the flow of materials from and to land and water ecosystems. Ecotones exist where active interactions between two or more adjacent ecosystems occur ... -
The tropical lapse rate steepened during the last glacial maximum.
(Unuversity of Nairobi, 2017)The gradient of air temperature with elevation (the temperature lapse rate) in the tropics is predicted to become less steep during the coming century as surface temperature rises, enhancing the threat of warming in ... -
Tropical rainforest tree species with Agroforesty potential.
(University of NairobiCollege of biological and physical science, 1989) -
Trust and Distrust: A Reputation Ratings Approach
(2016)Agents’ reputation ratings in a social network form a real valued matrix which is discounted with singular value decomposition (SVD) to estimate the trust and distrust levels of agents. SVD eliminates noise as future ... -
Trust Model For Social Network Using Singular Value Decomposition
(University of Nairobi, 2016)For effective interactions to take place in a social network, trust is important. We model trust of agents using the peer to peer reputation ratings in the network that forms a real valued matrix. Singular value decomposition ...